diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 9b9213674..8307f7b27 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.4.0.3-9"
-export PIKA_PACKAGE_NAME="haskell-prelude-extras"
+export PIKA_PACKAGE_VERSION="0.1.2.0-8"
+export PIKA_PACKAGE_NAME="haskell-data-default-class"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"